[IC]：-
[Frequency]：410~510MHz
[Power]：20dBm
[Distance]：2.5km
[Size]：36*21mm
[Introduction] ：E49-400T20D is an ultra-high cost-effective wireless module developed by Chengdu Ebyte. There are 4 operating modes. Each transmission mode has its own characteristics and can be applied to various application scenarios. E49-400T20D perfectly supports industrial-grade applications.
Limit Parameters
| Main Parameters | Performance | Remarks | |
| Min. | Max | ||
| Power supply（V） | 0 | 3.3 | Voltage over 5.5V will causepermanent damage to the module |
| Blocking power（dBm） | - | 10 | Chances of burn is slim when modulesare used in short distance |
| Operating temperature（℃） | -40 | 80 | |
Operating parameter
| Main Parameters | Performance | Remarks | ||
| Min. | Typ. | Max. | ||
| Operating voltage（V） | 2.3 | 5 | 5.5 | |
| Communication level（V） | 3.3 | |||
| Operating temperature（℃） | -40 | - | 80 | Industrial design |
| Operating frequency（MHz） | 410 | 433 | 510 | Support ISM band |
| TX Current(mA) | 75 | Instant power consumption | ||
| RX current（mA） | 12 | |||
| Sleep current（μA） | 0.7 | Software is shut down | ||
| Max Tx power（dBm） | - | - | 20.0 | |
| Receiving sensitivity（dBm） | -116 | -117 | -117 | Air data rate is 1.2kbps |
| Air data rate（bps） | 1.2k | 2.4k | 200k | Controlled via user’s programming |
| Main parameter | Description | Remarks |
| Distance for reference | 2.5km | Test condition：clear and open area, antenna gain: 5dBi，antenna height: 2.5m，air data rate: 1.2kbps |
| Sub-packet | 54 Byte | The maximum capacity of a single package is automaticallypacked after exceeding. |
| Buffer | 500 Byte | |
| Modulation | GFSK | |
| Communication interface | UART | |
| Package | DIP | |
| Connector | 2.54mm pin header | |
| Size | 36*21mm | |
| Antenna | SMA | 50 ohm impedance |
| Pin No. | Pin item | Pin direction | Application |
| 1 | M0 | Input（weak pull-up） | Work with M1 to decide 4 working modes of module (can be suspended, internalpull-up resistor). |
| 2 | M1 | Input（weak pull-up） | Work with M0 to decide 4 working modes of module (can be suspended, internalpull-up resistor). |
| 3 | RXD | Input | TTL UART input, connects to external TXD output pin. |
| 4 | TXD | Output | TTL UART output, connects to external RXD input pin. |
| 5 | AUX | Output | To indicate module ’s working status & wakes up the external MCU. During theprocedure of self-check initialization, the pin outputs low level. |
| 6 | VCC | Module power supply positive reference, voltage range: 2.6V ~ 3.3V DC | |
| 7 | GND | Ground | |
| 8 | GND | Ground | |
| 9 | GND | Ground | |
| 10 | GND | Ground |
| Order online |
| 【eBay】：https://www.ebay.com/usr/cdebyte |
| 【Aliexpress】：https://www.aliexpress.com/store/2798183 |
| 【Alibaba】：https://www.alibaba.com |
| For batch order/customized product |
| 【Sales hotline】：+86-28-61399028 Ext.812 |
| 【E-mail】：service@cdebyte.com |
| Technical support |
| 【Submit online】：http://www.ebyte.com/en/apple-technology.aspx |
| 【E-mail】：support@cdebyte.com |
| Model | Interface | IC | Frequency | Power | Distance | Air data rate | Package | Size | Feature | Manual | Sample |
|---|---|---|---|---|---|---|---|---|---|---|---|
| E49-900T20S | UART | - | 868M 915M | 20 | 2.5 | 1.2k~200k | SMD | 26 * 16 | Low power consumption | ||
| E49-900M20S | SPI | CMT2300A | 868M 915M | 20 | 3 | - | SMD | 20*14 | Low power consumption | ||
| E49-400M20S | SPI | - | 433M 470M | 20 | 2.5 | 0.5Kbps～300Kbps | SMD | 26 * 16 | Low power consumption, high cost performance | ||
| E49-400T20S | UART | - | 433M 470M | 20 | 2.5 | 1.2k~200k | SMD | 26 * 16 | Low power consumption, low cost solution | ||
| E49-400T20D | UART | - | 433M 470M | 20 | 2.5 | 1.2k~200k | DIP | 36*21 | Low power consumption, low cost solution |
